Difference between revisions of "RT-10 "Hammer" Solid Fuel Booster/ja"

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(使い方)
(使い方)
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== 使い方 ==
 
== 使い方 ==
RT-10は固体燃料ロケットゆえに一度点火すると出力調整も停止も出来ないが、特筆すべきはand is notable for its very high specific thrust (500N/kg and does not require separate tanks) and high propellant fraction (0.867).  This makes it very useful for the lift-off [[stage]] of a large launch vehicle early in [[Career]] games when the Rockomax [[Mainsail]] and [[Skipper]] engines are not yet available. Traditionally, only staggered and ripple-firing techniques were available to modulate thrust, however, starting with {{version|0.23|}}, the thrust and propellant load can be adjusted by right clicking on the part in the vehicle editor ([[VAB]] or [[SPH]]). This makes it easier to use for smaller boosters.
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RT-10は固体燃料ロケットゆえに一度点火すると出力調整も停止も出来ないが、特筆すべきはvery high specific thrust (500N/kg and does not require separate tanks)と高い推進剤質量分率(86.7%)である。This makes it very useful for the lift-off [[stage]] of a large launch vehicle early in [[Career]] games when the Rockomax [[Mainsail]] and [[Skipper]] engines are not yet available. Traditionally, only staggered and ripple-firing techniques were available to modulate thrust, however, starting with {{version|0.23|}}, the thrust and propellant load can be adjusted by right clicking on the part in the vehicle editor ([[VAB]] or [[SPH]]). This makes it easier to use for smaller boosters.
  
 
Another possible use is as a kick stage for imparting [[Tutorial:Advanced Rocket Design#Delta-V|high impulses]] to a very light payload: in this role, the high propellant fraction of the RT-10s offsets the low vacuum [[specific impulse]] and results in a high mass ratio. The high thrust allows a complete burn while in the vicinity of a planet, taking advantage of the [[w:Oberth effect|Oberth effect]]. The short maneuver duration makes the predicted outcome of an associated [[maneuver node]] more accurate. Starting with editor tweaking in 0.23, it is now possible to off-load propellants, but since this can't be done in flight, careful planning is still required (The [[LV-909 Liquid Fuel Engine]] is recommended for beginners, reached by researching [[Survivability]] immediately after [[Basic Rocketry]].)
 
Another possible use is as a kick stage for imparting [[Tutorial:Advanced Rocket Design#Delta-V|high impulses]] to a very light payload: in this role, the high propellant fraction of the RT-10s offsets the low vacuum [[specific impulse]] and results in a high mass ratio. The high thrust allows a complete burn while in the vicinity of a planet, taking advantage of the [[w:Oberth effect|Oberth effect]]. The short maneuver duration makes the predicted outcome of an associated [[maneuver node]] more accurate. Starting with editor tweaking in 0.23, it is now possible to off-load propellants, but since this can't be done in flight, careful planning is still required (The [[LV-909 Liquid Fuel Engine]] is recommended for beginners, reached by researching [[Survivability]] immediately after [[Basic Rocketry]].)

Revision as of 11:46, 22 September 2014

RT-10 "ハマー" 固体燃料ブースター
パーツ画像
Solid rocket booster によって
Found lying by the side of the road

接続サイズ M, 側面設置
コスト (合計) 400.00 Funds
(乾燥) 175.00 Funds
質量 (合計) 3.563 t
(乾燥) 0.750 t
空気抵抗 0.2-0.3
耐熱温度 2000 K
耐衝撃性 7 m/秒
開発技術 Basic rocketry.png 基礎ロケット工学
開発導入費 1 200 Funds
バージョンから 0.7.3
Part configuration solidBoosterRT-10_v2.cfg
最大推力 (1 atm) 197.90 kN
(真空) 227.00 kN
比推力 (1 atm) 170 秒
(真空) 195 秒
燃料流量 15.83 Units of fuel/秒
推力偏向 いいえ
噴射時間 (1 atm) 20.7 秒
(真空) 23.7 秒
Testing Environments
On the surface いいえ
In the ocean いいえ
On the launchpad はい
In the atmosphere はい
Sub-orbital はい
In an orbit はい
On an escape いいえ
ドッキング いいえ
Test by staging はい
Manually testable はい
固体燃料 375 Units of fuel

RT-10 Solid Fuel Booster(略称SRB)は短期的に追加推力を得るための固体燃料ブースターである。液体燃料式とは異なり単体で動作できる反面、燃料を増設することは出来ない。

使い方

RT-10は固体燃料ロケットゆえに一度点火すると出力調整も停止も出来ないが、特筆すべきはvery high specific thrust (500N/kg and does not require separate tanks)と高い推進剤質量分率(86.7%)である。This makes it very useful for the lift-off stage of a large launch vehicle early in Career games when the Rockomax Mainsail and Skipper engines are not yet available. Traditionally, only staggered and ripple-firing techniques were available to modulate thrust, however, starting with 0.23, the thrust and propellant load can be adjusted by right clicking on the part in the vehicle editor (VAB or SPH). This makes it easier to use for smaller boosters.

Another possible use is as a kick stage for imparting high impulses to a very light payload: in this role, the high propellant fraction of the RT-10s offsets the low vacuum specific impulse and results in a high mass ratio. The high thrust allows a complete burn while in the vicinity of a planet, taking advantage of the Oberth effect. The short maneuver duration makes the predicted outcome of an associated maneuver node more accurate. Starting with editor tweaking in 0.23, it is now possible to off-load propellants, but since this can't be done in flight, careful planning is still required (The LV-909 Liquid Fuel Engine is recommended for beginners, reached by researching Survivability immediately after Basic Rocketry.)

RT-10 Solid Fuel Boosters are prone to overheating, especially when large numbers are clustered together. The main ways to overcome this are ripple firing to keep too many in the cluster from firing at once, attaching "cooling" parts (typically struts, control surfaces or winglets), and by reducing the thrust by right-clicking the part in the editor (since 0.23). There is also a glitch in which attaching an RCS thruster completely prevents overheating.

Deliberately overheating the RT-10, such as by stacking two and firing the upper before the lower has burned out, allows the motor to function as an ad hoc decoupler (see explosive decoupling.) This is useful in mission-race Career games for maximizing Science while at the lowest level of the technology tree, before proper decouplers are available. It will also make the crew panic, including Jebediah.

Thrust can be regulated with tweakables, minimum required for booster to lift it's own weight off Kerbin surface is 15%. Thrust limiter allows for longer burns with lower acceleration. Specific impulse is identical for all thrust limiter settings.

ゲーム内の説明

爆薬を詰めたゴミ箱に毛が生えたようなものだと考えられていますが、RT-10は宇宙飛行士の生命よりコスト削減のほうが重要な場合に、たくさんの宇宙事業で使われています。ですが使用の際は注意してください。一度点火したら固体燃料ロケットは燃料が尽きるまで止めることができません。

トリビア

Version0.7.3~0.15.2の頃はRT-10はあまり利用されず、推力重量比の高さから主にネタプレイでしか出番がなかった。稀なケースとしてsticky pad(発射台貼り付き)バグの回避策に使用されたり、 ロケットの理想速度まで加速されるのにも利用された。

0.16では、比推力が442.4秒と全ロケットエンジン中最高になり、特に離陸では重宝された。しかし0.17で質量が増加修正され、比推力も212.4秒まで低下した。Other than these foibles,RT-10は初期実装パーツのなかで最も面影を残しているパーツだろう。

変更点

version 0.8~0.18の外観
0.18
  • モデルとテクスチャを刷新。
0.17
  • 合計質量を1.8tから3.5tへ変更、乾燥重量は0.36tから0.5tへ変更。
0.16
  • 推力を130から250へ変更。
0.8
  • テクスチャを変更
0.7.3
  • KSP初公開。